Answer:
x = ± 10
Step-by-step explanation:
Given
x² - 100 = 0 ( add 100 to both sides )
x² = 100 ( take the square root of both sides )
x = ±
← note plus or minus, hence
x = ± 10
Answer:
Triangle #2
Step-by-step explanation:
Translation involves the movement of a triangle without changing its direction or shape. It basically involves the sliding of a triangle, so Triangle 2 satisfies the definition of translation.
Greetings!
Convert both terms into improper fractions:

Find the LCM.

Simplify.

Convert to Mixed Number.

The second answer would be correct.
Hope this helps.
-Benjamin
Answer:
m+5n+7
Step-by-step explanation:
5m-n+7-4m+6n
=5m-4m-n+6n+7
=m+5n+7
Answer: 2.508
Step-by-step explanation:
As per give , we have
Sample size : n= 23
Degree of freedom : df= n-1=22
significance level : 
Since , the sample size is small (n<30) and population standard deviation is unknown.
So , we use t-test.
For confidence interval , we find two-tailed test value.
Critical t-value : 
[using students's t-critical value table]
Hence, the critical value that should be used in constructing the confidence interval = 2.508